I agree with Neuro regarding the B&W (not familiar with the Hoya)... In the B&W, go with the clear, MRC, F-Pro with the brass ring and nano coating...they are the best...You do not need the UV protection on a digital camera ...that is a factor with film...took me a while to break that habit.. Get the best B&W...that lens is a beauty and totally deserves it. That is what I have on mine..and everytime I take shot and look at them on-screen..I am AMAZED at the sharpness. The filter is not impeding the lens... Just an amazing lens.I just ordered the new 24-70mm f/2.8L II today from B&H...already have my 82mm (ouch$) MRC F-Pro sitting here on my desk waiting for the lens. Hope I get a good copy. Roger at Lens Rental was blown away by the performance so I hope that I am, too!!!!Enjoy.

Nope, this one. The one you linked is the F-Pro mount, and you want the XS-Pro mount. The F-Pro causes a slight increase in optical vignetting on the 70-200/2.8L IS II (unusual for a standard filter to vignette on a telephoto lens, but it does on this one - I've checked it myself).

I agree with Neuro...go with the clear, MRC, brass ring...they are the best...You do not need the UV protection on a digital camera ...that is a factor with film...took me a while to break that habit.

You don't need UV for digital, true. But it doesn't hurt, either. Depending on filter diameter, vendor, and geography, sometimes the UV version (010) is cheaper, sometimes the Clear (007) is cheaper. On amazon.com, the 77mm XS-Pro UV is $80, and the 77mm XS-Pro Clear is $115. Since there's no optical difference for a dSLR, I recommend getting whichever one is cheaper.

Nope, this one. The one you linked is the F-Pro mount, and you want the XS-Pro mount. The F-Pro causes a slight increase in optical vignetting on the 70-200/2.8L IS II (unusual for a standard filter to vignette on a telephoto lens, but it does on this one - I've checked it myself).

I agree with Neuro...go with the clear, MRC, brass ring...they are the best...You do not need the UV protection on a digital camera ...that is a factor with film...took me a while to break that habit.

You don't need UV for digital, true. But it doesn't hurt, either. Depending on filter diameter, vendor, and geography, sometimes the UV version (010) is cheaper, sometimes the Clear (007) is cheaper. On amazon.com, the 77mm XS-Pro UV is $80, and the 77mm XS-Pro Clear is $115. Since there's no optical difference for a dSLR, I recommend getting whichever one is cheaper.

WOW Neuro..I have not noticed any vignetting with my 77mm F-Pro..but I will take you word for it and give a closer look the next time I shoot....is the vignetting more at a certain focal length of the lens?I just checked some images I shot two weeks ago at 175mm and 200mm with a 1.4xIII on the lens and could see no signs of vignetting.

WOW Neuro..I have not noticed any vignetting with my 77mm F-Pro..but I will take you word for it and give a closer look the next time I shoot....is the vignetting more at a certain focal length of the lens?

As I stated in the description in the other thread, I have to work to bring it out. I had been using an F-Pro as well, and not noticed the vignetting in real-world shots. Well, let me rephrase - I did notice vignetting wide open, but the lens has a fair bit of native vignetting, and it seems the F-Pro makes it very slightly worse. But the thread made me check. The OP in that thread mentioned 100mm, so that's where I tested.

WOW Neuro..I have not noticed any vignetting with my 77mm F-Pro..but I will take you word for it and give a closer look the next time I shoot....is the vignetting more at a certain focal length of the lens?

As I stated in the description in the other thread, I have to work to bring it out. I had been using an F-Pro as well, and not noticed the vignetting in real-world shots. Well, let me rephrase - I did notice vignetting wide open, but the lens has a fair bit of native vignetting, and it seems the F-Pro makes it very slightly worse. But the thread made me check. The OP in that thread mentioned 100mm, so that's where I tested.

Good to know...so what you are saying is that if I shot a white background @100mm zoom...only @f/2.8 only and did a comparison ...if I put on my super vignette peeper glasses I might see a smidgen more vignetting??? LOL!...but...I didn't know!..I am telling U...I just didn't KNOW!I do not doubt you for a second that you are correct...and if I knew before hand I would have spent the additional funds and purchased the XS..but I will just leave the F-Pro on there..although..NOW you have ruined it for me! LOL! Thanks....Hmmmmmm...will I be thinking about this before I go to sleep tonight....hmmmmmmm

Nope, this one. The one you linked is the F-Pro mount, and you want the XS-Pro mount. The F-Pro causes a slight increase in optical vignetting on the 70-200/2.8L IS II (unusual for a standard filter to vignette on a telephoto lens, but it does on this one - I've checked it myself).

I agree with Neuro...go with the clear, MRC, brass ring...they are the best...You do not need the UV protection on a digital camera ...that is a factor with film...took me a while to break that habit.

You don't need UV for digital, true. But it doesn't hurt, either. Depending on filter diameter, vendor, and geography, sometimes the UV version (010) is cheaper, sometimes the Clear (007) is cheaper. On amazon.com, the 77mm XS-Pro UV is $80, and the 77mm XS-Pro Clear is $115. Since there's no optical difference for a dSLR, I recommend getting whichever one is cheaper.

Thank you, I'll likely order it tonight so I can get it Friday with the lens (I love Amazon Prime)....

I know it doesn't really need UV protection, but I thought most filters like this functioned primarily for lens protection, and to complete the weather sealing of the lens?

I thought most filters like this functioned primarily for lens protection, and to complete the weather sealing of the lens?

Both are debatable.

The use of a UV/clear filter for lens protection is frequently hotly debated. As was pointed out, a filter can decrease IQ. With top quality filters, the IQ hit is so minimal that it's not noticeable in most situations. But it will increase flare, no matter what - so when shooting a strongly backlit subject, you will lose a bit of contrast. Personally, I find filters much easier to clean than a front element (with the exception of the newest lenses with the fluorine coating).

As for weather sealing, Canon officially states the requirement only for a few lenses (16-35L II, 17-40L, and 50L). Chuck Westfall (Canon's technical guru) has recommended using a UV/clear filter on all sealed, non-supertele lenses.

Personally, I have B+W MRC UV filters on most of my lenses (not the 40mm pancake, and not the 600 II which doesn't take a front filter).

I agree with Neuro regarding the B&W (not familiar with the Hoya)... In the B&W, go with the clear, MRC, F-Pro with the brass ring and nano coating...they are the best...You do not need the UV protection on a digital camera ...that is a factor with film...took me a while to break that habit.. Get the best B&W...that lens is a beauty and totally deserves it. That is what I have on mine..and everytime I take shot and look at them on-screen..I am AMAZED at the sharpness. The filter is not impeding the lens... Just an amazing lens.I just ordered the new 24-70mm f/2.8L II today from B&H...already have my 82mm (ouch$) MRC F-Pro sitting here on my desk waiting for the lens. Hope I get a good copy. Roger at Lens Rental was blown away by the performance so I hope that I am, too!!!!Enjoy.